check_disk: Fail on missing arguments for --warning and --critical and fix a test case (#1935)

* check_disk: Fail on missing arguments for --warning and --critical
* Add new test function for percentage expressions and use it in check_disk
* Add error abort in tests if they fail to parse output
* Fix typo in test which probably broke the test since forever :-(

1 files changed, 6 insertions, 2 deletions

diff --git a/plugins/t/check_disk.t b/plugins/t/check_disk.t
index e0dd70e..9eb77ce 100644
--- a/plugins/t/check_disk.t
+++ b/plugins/t/check_disk.t
@@ -119,8 +119,12 @@ like  ( $result->only_output, qr/$more_free/, "Have disk name in text");
 
 $result = NPTest->testCmd( "./check_disk -w 1 -c 1 -p $more_free -p $less_free" );
 cmp_ok( $result->return_code, '==', 0, "At least 1 MB available on $more_free and $less_free");
+
 $_ = $result->output;
+
 my ($free_mb_on_mp1, $free_mb_on_mp2) = (m/(\d+)MiB .* (\d+)MiB /g);
+die "Cannot parse output: $_" unless ($free_mb_on_mp1 && $free_mb_on_mp2);
+
 my $free_mb_on_all = $free_mb_on_mp1 + $free_mb_on_mp2;
 
 
@@ -311,8 +315,8 @@ $result = NPTest->testCmd( "./check_disk -w 0% -c 0% -C -w 0% -c 0% -p $mountpoi
 like( $result->output, '/;.*;\|/', "-C selects partitions if -p is not given");
 
 # grouping: exit crit if the sum of free megs on mp1+mp2 is less than warn/crit
-$result = NPTest->testCmd( "./check_disk -w ". ($free_mb_on_all + 1) ." -c ". ($free_mb_on_all + 1) ."-g group -p $mountpoint_valid -p $mountpoint2_valid" );
-cmp_ok( $result->return_code, '==', 2, "grouping: exit crit if the sum of free megs on mp1+mp2 is less than warn/crit");
+$result = NPTest->testCmd( "./check_disk -w ". ($free_mb_on_all + 1) ." -c ". ($free_mb_on_all + 1) ." -g group -p $mountpoint_valid -p $mountpoint2_valid" );
+cmp_ok( $result->return_code, '==', 2, "grouping: exit crit if the sum of free megs on mp1+mp2 is less than warn/crit\nInstead received: " . $result->output);
 
 # grouping: exit warning if the sum of free megs on mp1+mp2 is between -w and -c
 $result = NPTest->testCmd( "./check_disk -w ". ($free_mb_on_all + 1) ." -c ". ($free_mb_on_all - 1) ." -g group -p $mountpoint_valid -p $mountpoint2_valid" );